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Thread: GPU Video decoding

  1. #1
    Junior Member Newbie
    Join Date
    Feb 2018
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    GPU Video decoding

    Hello,

    is it possible to decoding video on GPU via OpenGL under Windows?
    Maybe using some extensions?

    Thank you

  2. #2
    Newbie Frequent Contributor
    Join Date
    Mar 2016
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    896

    Re: GPU Video decoding

    Are you referring to what video player software usually calls hardware acceleration? I always thought that uses different APIs and some dedicated circuitry on the chip (I may well be wrong here, I don't know much about video acceleration techniques).
    I could imagine that it is quite possible to accelerate certain steps of video decompression on the GPU, however like many non-rendering specific tasks it's probably easier to use a compute API (OpenCL or CUDA).

  3. #3
    Junior Member Newbie
    Join Date
    Feb 2018
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    28

    Re: GPU Video decoding

    I am referring in particular to the GL_NV_vdpau_interop extension. VDAPU seems a collection of API to off load video decompression to GPU via openGL but it seems it doesn't work for windows. I suspect that, under windows, you only one choice and it is Microsoft's DxVA (DirectX Video Acceleration) API.

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